Marginal damage to this girl's clothes (6)
I believe the answer is:
slight
'marginal' is the definition.
(thesaurus)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for slight that I've seen before include "Inconsiderable - insult" , "Flimsy, tenuous" , "hardly worth mentioning?" , "Small in extent" , "A disrespectful reference - not great" .)